質問

Hi i'm trying to create the following construct.

enter image description here

Like you may can see i have 2 Columns "Tag" and "Angebot"

My "Tag"column will have a fixed number of rows (foreach weekday 1 row)
where "Angebot" will contains a List of items foreach row from "Tag" (so i will get 7 List's)

i can't throw them in one big list and group them by "Tag" because there non such Property

so how would you solve this problem

役に立ちましたか?

解決

Forgive me if my German is rusty but I believe what you are trying to do is group by day of week correct? I don't know what database you are using so I will demonstrate in MySQL:

It looks like you have your layout decided upon so I will focus on the functional data queries in SQL. Based on your description, I am assuming a reasonable DDL. I hope you don't mind the English translation.

First our offer (angebot) table:

CREATE TABLE
offer
(
  `id`      bigint AUTO_INCREMENT,
  `created` DATETIME             ,
  `from`    VARCHAR(64)          ,
  `item`    VARCHAR(64)          ,
  `amount`  DECIMAL(8,2)          ,
  PRIMARY KEY (id)
);

Now here is a detail query on the table by day number (Tagesnummer). This one is for last month (Feb-2014)

SELECT
         DAYOFWEEK(created) AS `tag_num`,
         DAYNAME(created)   AS `tag`    ,
         `created`                      ,
         `from`                         ,
         `item`                         ,
         `amount`
FROM
         `offer`
WHERE
         `created` >= '2014-02-01'
AND      `created`  < '2014-03-01'
ORDER BY
         DAYOFWEEK(created)

Example Output:

+---------+-----------+---------------------+-------------------+---------+--------+
| tag_num | tag       | created             | from              | item    | amount |
+---------+-----------+---------------------+-------------------+---------+--------+
|       1 | Sunday    | 2014-02-23 13:23:10 | Ivor Quinn        | B6C 5J9 |  91.12 |
|       1 | Sunday    | 2014-02-23 05:21:33 | Ray Robbins       | T2P 4T2 |  13.58 |
|       1 | Sunday    | 2014-02-23 16:31:47 | Craig Orr         | C2R 1I8 |  59.48 |
|       1 | Sunday    | 2014-02-23 13:23:10 | Ivor Quinn        | B6C 5J9 |  91.12 |
|       1 | Sunday    | 2014-02-23 05:21:33 | Ray Robbins       | T2P 4T2 |  13.58 |
|       1 | Sunday    | 2014-02-23 16:31:47 | Craig Orr         | C2R 1I8 |  59.48 |
|       2 | Monday    | 2014-02-10 05:50:36 | Dale Estes        | H9V 2L3 |  63.03 |
|       2 | Monday    | 2014-02-24 06:45:23 | Damian Vincent    | T8T 6E4 |   5.02 |
|       2 | Monday    | 2014-02-10 05:50:36 | Dale Estes        | H9V 2L3 |  63.03 |
|       2 | Monday    | 2014-02-24 06:45:23 | Damian Vincent    | T8T 6E4 |   5.02 |
|       3 | Tuesday   | 2014-02-11 14:20:17 | Oscar Trevino     | F2L 0T3 |  60.22 |
|       3 | Tuesday   | 2014-02-11 05:45:39 | Hilel Cline       | N4M 3V2 |  40.45 |
etc...

Here is a summary total of offer amounts by day for Feb-2014:

SELECT
         DAYOFWEEK(created) AS `tag_num`,
         DAYNAME(created)   AS `tag`    ,
         SUM(`amount`)
FROM
         `offer`
WHERE
         `created` >= '2014-02-01'
AND      `created`  < '2014-03-01'
GROUP BY
         DAYOFWEEK(created)

Example output:

+---------+-----------+---------------+
| tag_num | tag       | SUM(`amount`) |
+---------+-----------+---------------+
|       1 | Sunday    |        328.36 |
|       2 | Monday    |        136.10 |
|       3 | Tuesday   |        141.12 |
|       4 | Wednesday |         89.38 |
|       6 | Friday    |        169.33 |
|       7 | Saturday  |          1.76 |
+---------+-----------+---------------+
6 rows in set (0.00 sec)

The DDL and queries in this post have been tested. Let me know if you need the data :)

ライセンス: CC-BY-SA帰属
所属していません StackOverflow
scroll top